Road traffic signs technical requirements

　　1、Set of traffic signs should be considered, rational layout, lack of information, or to prevent overload phenomenon. Information should be connected, it is important to repeat the information should be displayed.
　　2、Traffic signs under normal circumstances should be set in the direction of travel the road to the right or above the roadway; also be based on the specific circumstances set on the left, or left and right sides at the same time to set up.
　　3、To ensure visibility at the same place you need to set more than two signs may be installed in a support structure (support) on, but not more than four maximum; flag set separately, should meet the ban, instructions and warning signs set space.
　　4、In principle, to avoid different types of signs and set. Structure (support) on time can not be set as conditions of restricted alone, up to a support; lifting the speed limit signs, unban overtaking signs, traffic signs priority intersection, the car will first sign, stop to sign, slow down so that the line markings shall be set separately no more than two signs. When the sign board in a support structure (support) and set up, should the ban, indicating the order of the warning, the first following the first left-right order.
　　5、Warning signs should set up more. The same place when you need to set up two or more warning signs, set only one of which is most needed in principle. (Warning Signs: Warning vehicles, pedestrians road ahead)